Table 7. Airline Domestic Unit Revenue (Cents Per Mile),,,,,,, Low-Cost Carriers ,,,,,,, Ranked by 2nd Quarter 2006 Domestic Unit Revenue ,,,,,,, (Domestic Operating Revenue Per Available Seat Mile) ,,,,,,, 2Q 2006 Rank,Low-Cost Carriers,2nd Quarter 2005 ,3rd Quarter 2005 ,4th Quarter 2005 ,1st Quarter 2006 ,2nd Quarter 2006 ,2nd Quarter Operating Revenue $(Millions) 1,America West,11.4,11.5,11.5,12.4,13.4,985 2,Frontier,10.7,10.9,10.6,10.7,11.6,282 3,AirTran,9.6,9.6,9.9,9.7,11.2,527 4,Spirit,9.2,8.5,8.7,8.9,11,122 5,Southwest,8,9.1,9.1,9.1,10.7,"2,449" 6,JetBlue,7.4,7.2,7,7.5,8.5,611 7,ATA,6.7,7.6,7.4,7.3,8.5,111 ,Seven-Carrier Total,8.7,9.3,9.3,9.5,10.8,"5,087" "Source: Bureau of Transportation Statistics; Form 41, Schedule P1.2. T100; T2 Data",,,,,,,